Door stop for a laterally movable door

ABSTRACT

A door stop for a laterally movable door which is hung on a building wall includes a bracket mounted near the forward edge of the door on the surface toward the wall and a slide member which is horizontally slideable in the bracket and has an offset stop bar at its front end and ears at its rear end. As the door nears closed position the stop bar engages one door jamb, and the door continues to move until the bracket abuts the stop bar. The door is stopped in open position when the stop bar is engaged with the other door jamb and the bracket abuts the ears. A latch strike on the first jamb engages the stop bar to &#39;&#39;&#39;&#39;snug&#39;&#39;&#39;&#39; the door against the wall, and to permit the door to be locked shut.

United States Patent 1 [111 3,883,165

Wenzlow May 13, 1975 DOOR STOP FOR A LATERALLY MOVABLE DOOR LudwigWenzlow, Deerfield, Ill.

Chromalloy American Corporation, Harvard, I11.

Filed: Mar. 29, 1974 Appl. No.: 455,999

Inventor:

Assign ee:

References Cited UNITED STATES PATENTS 9/1957 Adams 292/DIG. 46 11/1957Squire 292/169.14 X 12/1962 Lemaire 292/251.5 X

Primary Examiner-Richard E. Moore Attorney, Agent, or FirmWegner,Stellman, McCord, Wiles & Wood [57] ABSTRACT A door stop for a laterallymovable door which is hung on a building wall includes a bracket mountednear the forward edge of the door on the surface toward the wall and aslide member which is horizontally slideable in the bracket and has anoffset stop bar at its front end and ears at its rear end. As the doornears closed position the stop bar engages one door jamb, and the doorcontinues to move until the bracket abuts the stop bar. The door isstopped in open position when the stop bar is engaged with the otherdoor jamb and the bracket abuts the cars. A latch strike on the firstjamb engages the stop bar to snug" the door against the wall, and topermit the door to be locked shut 12 Claims, 7 Drawing Figures DOOR STOPFOR A LATERALLY MOVABLE DOOR BACKGROUND OF THE INVENTION In anystructure which has a sliding door mounted for lateral movement on awall, some sort of a stop is necessary to stop the door in its closedposition and also to stop the door in its open position. Such doors maybe mounted either on the outside or on the inside of a building wall;but most commonly they are mounted on the outside of a wall as is commonin pole frame buildings, barns, etc. A typical pole frame buildingprovided with a sliding door and door stop is illustrated in Uphoff US.Pat. No. 3534431. The present invention is disclosed as applied to astructure of the type shown in the Uphoff patent.

A typical pole frame building has a frame using poles, with a treatedwooden skirt nailed to the outside of the poles at ground level andextending upwardly for a distance which is at least 6 to 12 inches andmay be 36 inches or so. Above skirt height there are girts nailed to thepoles, and thin gauge corrugated metal siding is nailed to the girtswith its lower edge overlapping the skirt by an inch or two. The typicalsliding door has a wood framework and an outside skin of the corrugatedsheet metal panels, and the lowest 3 to 4 inches of the bottom doorframe member is not covered with corrugated metal so that it may providea smooth surface for a bottom stay roller or door guide.

Heretofore the door stops commonly used for such doors have been mountedon the building structure, rather than on the door. As a rule the devicewhich stops the door in closed position, and sometimes the device whichstops the door in open position, embraces the edge of the door torestrain it from swinging in the wind and damaging the mountingtrolleys, the door or the building. The door stop disclosed in theUphoff patent is typical of those used with either single or doublesliding doors, and it is apparent that a pair of generally similar stopscould be mounted on the building skirt near the sidewalls to stop andrestrain the doors in open position.

There are a number of disadvantages or limitations to the use of doorstops which are mounted on the building. These include the following:

1. The stop usually must be mounted low, either on the building floor inthe case of a closing stop for a apir of sliding doors or on thebuilding skirt. When the door is moved vigorously to its open or closedposition, it comes to an abrupt stop which causes it to cant or cockedgewise which exerts extreme stress on the door track and trolleys.

2. Modern pole type buildings have very attractive corrugated sidingwith a baked enamel surface, and a stop mounted on the outside of thebuilding detracts from the appearance of the building.

3. In some cases a sliding door projects slightly beyond the buildingcorner when the door is fully open, and in that case there is nostructure on which to fasten a conventional stop for the open door andit is necessary to extend the skirt at the corner of the building with ashort piece of plank to receive a stop. This is unsightly, and may behazardous to persons walking past the building.

4. Even a single sliding door requires two stop devices, which involvesextra cost and extra labor as compared to a single device which couldserve the same function.

A typical sliding door which slides outside the wall and the door jambsis of such dimensions that the closed door overlaps the jambs by aboutone-half inch to provide better protection against the wind and theelements than would be the case if the door were exactly the same widthas the opening.

SUMMARY OF THE INVENTION The present invention eliminates all of theabove described disadvantages or limitations of the typical prior artdoor stops.

The device mounts near the forward edge of the door on the door surfacewhich is toward the wall, so that when the door is closed no part of thestop structure is visible from the outside of the building.

Since the device mounts on the door, it may be in a vertical positionwhich is near to or at the vertical center of gravity and thuseliminates undesirable cocking or canting of the door when it is movedforcibly to its closed or its open position.

Further, the inside mounting protects the stop elements from weather,and permits a person to install the device from inside the structurewhich can be most advantageous in bad weather.

The door stop structure allows the leading edge portion of the door tooverlap the jamb in closed position, and also allows the door to befully opened to permit utilization of the entire door opening.

When the door is in its fully closed position the cooperation betweenthe stop slide member and the latch strike cams the door toward thebuilding wall and holds it there.

The latch strike structure accommodates a locking pin to lock thesliding door from the inside for security reasons.

THE DRAWINGS FIG. 1 is a fragmentary view of a wall, door openinganddoor of a pole building, seen from the inside with the door fullyclosed, and with the device of the present invention mounted on thedoor;

FIG. 2 is a fragmentary view on an enlarged scale which constitutes afront elevational view of the device of the invention with theassociated parts of the door and door jamb;

FIG. 3 is a horizontal sectional view taken substantially as indicatedalong the line 3-3 of FIG. 2;

FIG. 4 is a sectional view taken substantially as indicated along theline 44 of FIG. 3;

FIG. 5 is a view similar to FIG. 2 with the door approaching its fullyopen position;

FIG. 6 is a horizontal sectional view taken substantially as indicatedalong the line 66 of FIG. 5; and

FIG. 7 is a view similar to FIG. 6 with the door in its fully openposition.

DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings, andreferring first to FIG. 1, a pole building has upright poles 10, a skirt11 consisting of planks secured to the exterior of the poles, horizontalgirts 12 which are also secured to the exterior of the poles, and sidingconsisting of corrugated metal plates 13. A doorway 14 is framed by afirst jamb 15, a second jamb 16 and a lintel 17. A door, indicatedgenerally at 18, includes a bottom frame member 19,

a top frame member 20, side frame members 21 and 22, cross frame members23, upright frame members 24, and a corrugated metal skin 25 whichmatches the siding 13. A split tubular track 26 is mounted on theoutside of the building on a track plank, and wheeled door suspensioncarriages 27 support the door in the track 26 for lateral slidingmovement to close and expose the dporway 14. In modern pole buildingsthe metal siding 13 and door skin 25 is commonly of the type that hassquare corrugations extending vertically, and the outer surface of themetal has a baked enamel finish which makes the building quiteattractive.

The device of the present invention constitutes the stop means,indicated generally at 30, which is preferably mounted on the centerhorizontal door frame member 23 so as to be substantially equidistantfrom the bottom door frame 19 and the carriages 27 to eliminate edgewisecocking or canting of the door if it is moved violently to its open orclosed position. The stop means 30 includes a bracket, indicatedgenerally at 31, a slide member, indicated generally at 32, and astrike, indicated generally at 33.

The bracket 31 is best seen in FIGS. 2 to 4 to include a top wall 34 anda bottom wall 35 connected by a plate 36 which spans the horizontal doorframe member 23 so that the walls 34 and 35 serve as mounting flanges toreceive screws 37 which are driven into the top and bottom of the framemember 23. The plate 36 has a recessed central area 36a which rests onthe frame member 23 to establish the spacing of the plate from the framemember, and additional screws 37 impale the recessed area to aid insecuring the bracket to the door. The plate 36 has a front end portion38 and a rear end portion 39 which are inclined toward the frame member23. Upper and lower margins 38a and 38b of the portion 38, and upper andlower margins 39a and 39b of the portion 39, are best seen in FIG. to bespaced from the planes of the walls 34 and 35 and cooperate with thewalls to form a horizontal slideway.

The slide member 32 is generally U-shaped, and consists of parallelupper and lower arms 40 and 41, respectively, connected by a bightportion, indicated generally at 42, which includes arm offsets 43 and 44and an offset stop bar 45. The parellel arms 40 and 41 slide in thetrackways defined by the bracket walls 34 and 35, the plate 36, theedges 38a-3 8b and 39a-39b, and the surface of the horizontal door framemember 23. The rear ends of the slide member arms 40 and 41 are bentupwardly and downwardly, respectively, to form ears 46 and 47. Theoffset arms 43 and 44 limit relative movement between the bracket 31 andthe slide member 32 in one direction, while the ears 46 and 47 limitsuch movement in the opposite direction.

The latch strike 33 includes a mounting flange 48 having parallel slots49 to receive mounting screws 50 by means of which the strike 33 ismounted with the flange 48 against the inner face a of the first jamb15. Projecting outwardly from the bracket 48 is an integral strike bodywhich includes a retaining portion 51 that is generally perpendicular tothe surface 15a, a cam portion 52, and a return portion 53 that isgenerally parallel to the retaining portion 51. The retaining portion 51and the return portion 53 are provided with aligned holes 51a and 53a,respectively, which receive the shank of a locking device such as thepin 54.

When the door is closed the stop bar 45 of the slide member 32 abuts thelatch strike flange 48 and the forward edge of the bracket 31, and thebracket is far enough from the front edge 21a of the door that in thisposition the front upright door frame member 21 overlaps the first jamb15. Removal of the locking pin 54 from the aligned holes 51a and 53apermits the door to be moved toward its open position, and as seen inFIGS. 5 to 7 if the normal space between the door cross frame members 23and the door jamb 16 is less than the depth of the bracket 31 (which iscommonly the case since the slide member 32 is preferably fabricatedfrom about /2 inch rod) the inclined rear end portion 39 of the bracketplate 36 rides over the edge of the second jamb 16 and along the face ofthe jamb. If the door is close enough to the jamb 15 for the ears 46 and47 to bear firmly against the inner face 16a of the jamb 16, engagementof the ears with the jamb stops further movement of the slide member 32while the door continues to move toward its open position until thebracket 31 strikes the ears 46 and 47, and the door can continue to moveuntil the offset arms 43 and 44 strike the inner surface 16a of the jamb16 as seen in FIG. 7 and stop the door in its fully open position withthe forward edge 21a of the door generally aligned with the inner face16a of the jamb 16. On the other hand, if the door is hung far enoughout from the building that the ears 46 and 47 either clear the jamb orride lightly over its upright edge, then the slide member 32 and thebracket 31 retain their relative positions as illustrated in FIGS. 2 and3 until the offset arms 43 and 44 engage the jamb 16 to stop furthermovement of the slide member 32 while permitting the door to continueits movement toward open position until the ears 46 and 47 abut thebracket.

When the door is moved toward closed position, the slide member 32occupies the position illustrated in FIG. 6, and thus the offset stopbar 45 engages the inclined cam face 52 of the latch strike 33 whichstops forward movement of the slide member 32 while permitting the doorto continue its movement toward closed position until the front edge ofthe bracket 31 abuts the offset arms 43 and 44 and forces the stop bar45 along the cam face 52 to force the door inwardly toward the buildingwall until the stop bar 45 rides onto the retaining surface 51 of thelatch strike, and ultimately the stop bar 45 abuts the latch strikemounting flange 48 to stop the door in the fully closed position of FIG.3.

The foregoing detailed description is given for clearness ofunderstanding only and no unnecessary limitations should be understoodtherefrom, as modifications will be obvious to those skilled in the art.

I claim:

1. A door stop for a laterally movable door which has a forward edge anda rearward edge and which is hung on a building wall to selectivelycover a door opening that has a first jamb and a second jamb, said doorstop comprising, in combination:

a bracket providing a horizontal slideway mounted adjacent the forwwardedge of the door on the door surface which is toward the wall; a slidemember in said slideway and projecting from both ends of the bracket,said slide member having a front end and a rear end;

an integral offset stop bar at the front end of the slide member whichengages the first jamb asthe door nears fully closed position, and whichis thereafter abutted by the bracket to stop forward movement of thedoor, said stop bar engaging the second jamb when the door is in fullyopen position;

and ears at the rear end of the slide member which are abutted by thebracket when the door is fully open.

2. The combination of claim 1 which includes a latch strike on the firstjamb which has a camming surface that is engaged by the stop bar toforce the forward edge portion of the door toward the wall, and aretaining surface.

3. The combination of claim 2 in which the latch strike has an openingwhich is to the rear of the stop bar when the door is fully closed, toreceive a lock member.

4. The combination of claim 1 which includes a latch strike that has amounting flange secured to the first jamb and an arm with an openingwhich is to the rear of the stop bar when the door is fully closed, toreceive a lock member.

5. The combination of claim 4 in which the arm has a camming surfaceadjacent its free end that is engaged by the stop bar to force theforward edge portion of the door toward the wall.

6. The combination of claim 1 in which the bracket is mounted a shortdistance from the forward edge of the door so that when the stop bar isengaged with the jamb and abutted by the bracket the forward edgeportion of the door overlaps the first jamb.

7. The combination of claim 6 which includes a latch strike on the firstjamb which has a camming surface that is engaged by the stop bar toforce the forward edge portion of the door toward the jamb and aretaining surface.

8. The combination of claim 1 in which the length of the slide member issubstantially equal to the distance from the forward edge of the door tothe rear of the bracket, so in open position the forward edge of thedoor is substantially aligned with the inner edge of the second jamb.

9. The combination of claim 1 in which the bracket has mounting flangessecured to the door and a plate between the flanges, the slide member isbetween the plate and the door, and the rear of the plate has a short,inclined end portion which may engage the second jamb to cam the dooraway from the wall.

10. The combination of claim 1 in which the bracket has parallel upperand lower walls which cooperate to form-the slideway, and the slidemember is essentially U-shaped with parallel arms that slide along saidupper and lower walls, a bight portion which is offset to provide thestop bar, and outturned extremities on the arms which provide the ears.

11. The combination of claim 10 in which the bracket includes a platethat connects the upper and lower walls and is spaced from the door, theslide member is between the plate and the door, the end portions of theplate are inclined toward the door and have their upper and lowermargins spaced inwardly from said Walls, and the arms of the slidemember are between said walls and said upper and lower margins.

12. The combination of claim 11 in which the bracket plate has a centralrecess providing a face which abuts the door surface to establish thedistance between the plate surface and the door surface.

1. A door stop for a laterally movable door which has a forward edge anda rearward edge and which is hung on a building wall to selectivelycover a door opening that has a first jamb and a second jamb, said doorstop comprising, in combination: a bracket providing a horizontalslideway mounted adjacent the forwward edge of the door on the doorsurface which is toward the wall; a slide member in said slideway andprojecting from both ends of the bracket, said slide member having afront end and a rear end; an integral offset stop bar at the front endof the slide member which engages the first jamb as the door nears fullyclosed position, and which is thereafter abutted by the bracket to stopforward movement of the door, said stop bar engaging the second jambwhen the door is in fully open position; and ears at the rear end of theslide member which are abutted by the bracket when the door is fullyopen.
 2. The combination of claim 1 which includes a latch strike on thefirst jamb which has a camming surface that is engaged by the stop barto force the forward edge portion of the door toward the wall, and aretaining surface.
 3. The combination of claim 2 in which the latchstrike has an opening which is to the rear of the stop bar when the dooris fully closed, to receive a lock member.
 4. The combination of claim 1which includes a latch strike that has a mounting flange secured to thefirst jamb and an arm with an opening which is to the rear of the stopbar when the door is fully closed, to receive a lock member.
 5. Thecombination of claim 4 in which the arm has a camming surface adjacentits free end that is engaged by the stop bar to force the forward edgeportion of the door toward the wall.
 6. The combination of claim 1 inwhich the bracket is mounted a short distance from the forward edge ofthe door so that when the stop bar is engaged with the jamb and abuttedby the bracket the forward edge portion of the door overlaps the firstjamb.
 7. The combination of claim 6 which includes a latch strike on thefirst jamb wHich has a camming surface that is engaged by the stop barto force the forward edge portion of the door toward the jamb and aretaining surface.
 8. The combination of claim 1 in which the length ofthe slide member is substantially equal to the distance from the forwardedge of the door to the rear of the bracket, so in open position theforward edge of the door is substantially aligned with the inner edge ofthe second jamb.
 9. The combination of claim 1 in which the bracket hasmounting flanges secured to the door and a plate between the flanges,the slide member is between the plate and the door, and the rear of theplate has a short, inclined end portion which may engage the second jambto cam the door away from the wall.
 10. The combination of claim 1 inwhich the bracket has parallel upper and lower walls which cooperate toform the slideway, and the slide member is essentially U-shaped withparallel arms that slide along said upper and lower walls, a bightportion which is offset to provide the stop bar, and outturnedextremities on the arms which provide the ears.
 11. The combination ofclaim 10 in which the bracket includes a plate that connects the upperand lower walls and is spaced from the door, the slide member is betweenthe plate and the door, the end portions of the plate are inclinedtoward the door and have their upper and lower margins spaced inwardlyfrom said walls, and the arms of the slide member are between said wallsand said upper and lower margins.
 12. The combination of claim 11 inwhich the bracket plate has a central recess providing a face whichabuts the door surface to establish the distance between the platesurface and the door surface.